When Porsche->ke1 announced the initial specifications for the upcoming 918 Spyder, it announced a combined output of 795 horsepower.

Apparently, that was a little bit off, as it is now rumored that the supercar will be significantly better than initially claimed. The output will go somewhere in the 875-horsepower area, the weight will be lower and the Nürburgring time will be under 7 minutes.

Also, one buyer said at the Goodwood Festival of Speed said that he has seen the final production version, and when compared to it, both the LaFerrari and McLaren P1 look “mediocre.” Also, the same buyer claims that while everyone thinks they know how the supercar looks like, we are all in for a huge surprise when the production model drops.

The buyer also stated that the 918 Spyder will be a targa model and "will travel at 150 kms on electric alone." This can be taken one of two ways. The first way is that he means it delivers an electric-only range of about 150 kilometers (93 miles) -- a rather stout number. The second meaning is that it has a top speed of 150 km/h (93 mph).

The new Porsche 918 Spyder will make its world debut in September at the 2013 Frankfurt Motor Show.

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